Linotype-machine.



Patented Oct. l6. I900.

G. A. VASSBERG. LINUTYPE MACHINE.

(Application filed May 8, 1900.)

2 Sheets-Sheet I.

(No Model.)

o. PNOTOilYNOv WASHINGTON. o, c,

No. 659,863. Patented Oct. I6, I900.

a. A. VA'SSBERG.

LINOTYPE MACHINE.

[Application filed May 3, 1900.)

No Model.) 2 Sheets-Sheet z.

Niin STATES PATET inncn.

GUSTAF ADOLF VASSBERG, OF STOOKHOLM, SWEDEN, ASSIGNOR TO THE MERGENTHALER LINOTYPE COMPANY, OF NEW YORK.

LlNOTYPE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 659.863, dated October 16, 1900.

Application filed May 3, 1900- Serial No. 15,340. (No model.)

To all whom, it Wtay concern:

Be it known that I, GUSTAF ADOLF VASS- BERG, of Stockholm, Sweden, have invented a new and useful Improvement in Linotype- Machines, of which the following is aspecification.

In linotype-machines such, for example, as that represented in Letters Patent of the United States No. 557,000 to Ottmar Morgen- IO thaler a linotype or printing-slug is formed in a slotted mold, which is temporarily closed at the front against a composed line of matrices, While molten metal is delivered into the rear from the mouth of a melting-pot, which I5 is closed against the mold and provided with a pn 1n p-plunger. In order to secure the proper operation of the parts and the production of slugs of the exact height required, it is necessary that the two faces of the mold should be closed tightly against the meltingpot and the matrices, respectively, and that the matrices shall be crowded tightly against the parts by which they are sustained in line. In practice it sometimes occurs, because of the negligence of the attendant, that the various elements are prevented from closing together properly. If the matrices are not properly alined or if a foreign substance is permitted to accumulate on either face of the mold or 0 on the face of the pot, the joints between the parts will not be properly closed, and if the pump is permitted to operate molten metal will be ejected into the operative parts in such manner as to prevent their proper action.

5 The object of the present invention is to prevent the action of the pump whenever there is a failure of the pot to close tightly against the mold or a failure of the mold to close tightly against the faces of the matricos; and to this end it consists, essentially, in a pump-controlling device actuated by the melting-pot or an equivalent movable member of the casting mechanism.

In the drawings I have shown my device 5 applied to the Mergenthaler linotype-machine of the present commercial form and as consisting of a stop for the pump-lever actuated by a projection on the movable melting-pot. With the exception of the parts specifically described herein the ordinary construction may be followed in all respects.

Figure l is a central section through the casting mechanism of a linotype-machine from front to rear with my improvements applied thereto. Fig. 2 is a front elevation of the stop device lookingin the direction of the arrow numbered 2 in Fig. 1. Fig. 3 is a top plan View of the stop device.

Referring to the drawings, A represents the forward portion of the main frame, commonly known as the vise'frame, and B a vertically-movable matrix-support, commonly known as the first elevator, and serving to sustain the line of matrices O and lower it into operative position in front of the mold.

D is the slotted mold, secured in the vertically-revolving mold-wheel E, which is mounted, as usual, on a horizontal sliding support, so that the mold maybe carried forward against the rear faces of the matrices in order to crowd them against the forward Wall of the elevator B, thus insuring their exact alinement and also insuring intimate contact and a close joint between the front face of the mold and the matrices.

F represents the melting-pot, mounted on supporting-legs and arranged to swing forward and backward to and from the mold.

It is provided with a delivery-throat for directing the metal into the mold and with the usual pump-plunger G, by which the delivery of the metal is effected. The plunger is operated by a lever H, pivoted to the main frame and subject to the influence of a depressing-spring I and a lifting-cam J. y

All of the foregoing parts are constructed and arranged to operate in the usual manner.

The line of matrices after being introduced into the elevator B is lowered thereby into position in front of the mold, aft-er which the pot and the mold advance, the parts being crowded tightly together, so thata close joint is maintained between the mold and the matrices at the front and the mold and the mouth of the pot at the rear.

In applying my improvement I provide a stop or dog M and mount the same to swing horizontally on a vertical pivot on on a rigid arm or projection of the main frame, by which the stop is given a firm support. When the too end of the stop is swung to the left, it stands beneath a shoulder or projection It on the pump-lever, so that the falling of the lever and thedelivery of the molten metal is prevented. A spring N is arranged'to hold the stop normally in its position. A lever O, mounted on a horizontal pivot, engages at its upper end with the stop M, while its lower end is provided with an adjusting-screw 0 in the path of the projection or ear on the rear end of the melting-pot. If the matrices, the mold, and the pot all close to their operative positions,the projection on the pot,encountering the screw in the lower end ofthe lever 0, will cause the latter to move the stop M out of the path of the pump-lever, which will be permitted to operate in the usual manner. If, however, the pot is prevented from going forward to its proper position, it will fail to act on the lever O and the pump-stop will remain in position to prevent the action of the pump. This stoppage of the pump will occur in the event of the matrices failing to assume the proper position in front of the mold, so that the latter is held back, or in the event of there beingforeign matter on the face of the mold or the matrices or inthe event of foreign matter being present between the mold and the mouth of the pot. In short, anything which prevents either the matrices, the mold, or the pot fromassuming the proper position for action will also forbid the action of the pump, and thus prevent the formation of a defective slug or the delivery of molten metal improperly among the parts of the machine.

The essence of my invention resides in the employment of a pumpcontrolling device which is dependent upon the changing relations between the mold, the matrices, and

the pot, and it is manifest that it may be widely modified in detail and that it may be applied not only to the particular form of machine herein shown, but to other linotype or line-casting machines in which the pot is stationary and the mold and matrix carriers movable in relation to the pot.

Having described my invention, what I claim is 1. In a linotype-machine, the combination of the pump mechanism, a stop device therefor, and a melting-pot directly and positively controlling the stop deviceto prevent the ac "tion of the pump in the event of the mold failing to properly contact with the matrices or with the pot.

2. In a linotype-machine, the combination of the pump-lever, the movable stop therefor, andthe movable pot arranged to directly operate said stop whereby the pump is prevented from acting unless the mold is in intimate contact with the matrices and the pot.

3.v In a linotype-machine, the combination of a line of matrices, a mold, movable to and from said line, a metal-pot movable to and from the mold and provided with a metal-delivering pump, and a pump-controlling device, actuated by the pot to arrest the pump in the event of the failure of the mold or the pot to move forward to the proper position.

Intestimony whereof I hereunto set my hand, this 4th day of April, 1900, in the presence of two attesting witnesses.

GUSTAF ADOLF VASSBERG.

Witnesses:

A. HUMMAN, E. W. ATMEN. 

